WO2022005235A1 - 액화가스 저장탱크 및 이를 포함하는 선박 - Google Patents
액화가스 저장탱크 및 이를 포함하는 선박 Download PDFInfo
- Publication number
- WO2022005235A1 WO2022005235A1 PCT/KR2021/008383 KR2021008383W WO2022005235A1 WO 2022005235 A1 WO2022005235 A1 WO 2022005235A1 KR 2021008383 W KR2021008383 W KR 2021008383W WO 2022005235 A1 WO2022005235 A1 WO 2022005235A1
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- WO
- WIPO (PCT)
- Prior art keywords
- liquefied gas
- pump
- rotary bearing
- storage tank
- restraining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
- B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/002—Storage in barges or on ships
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0147—Shape complex
- F17C2201/0157—Polygonal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/03—Orientation
- F17C2201/035—Orientation with substantially horizontal main axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0329—Foam
- F17C2203/0333—Polyurethane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0337—Granular
- F17C2203/0341—Perlite
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0604—Liners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0646—Aluminium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0648—Alloys or compositions of metals
- F17C2203/0651—Invar
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0658—Synthetics
- F17C2203/0663—Synthetics in form of fibers or filaments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/035—Propane butane, e.g. LPG, GPL
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/033—Small pressure, e.g. for liquefied gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0171—Arrangement
- F17C2227/0178—Arrangement in the vessel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0408—Level of content in the vessel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/011—Barges
- F17C2270/0113—Barges floating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Definitions
- the present invention relates to a liquefied gas storage tank and a ship including the same.
- liquefied gas such as liquefied natural gas (LNG) and liquefied petroleum gas (LPG) is widely used to replace gasoline or diesel.
- LNG liquefied natural gas
- LPG liquefied petroleum gas
- LNG in ships that transport or store liquefied gas such as LNG at sea, LNG RV (Regasification Vessel), LNG FPSO (Floating, Production, Storage and Offloading), and LNG FSRU (Floating Storage and Regasification Unit)
- a liquefied gas storage tank (referred to as a "cargo hold") is installed to store the liquefied gas in a cryogenic liquid state.
- a pump tower for the inflow and outflow of the liquefied gas is installed in this liquefied gas storage tank.
- the upper end of the pump tower is fixed to the dome of the liquefied gas storage tank, and the lower end is guided by a guide structure provided on the inner floor of the liquefied gas storage tank.
- the pump tower is provided in a form extending vertically to correspond to the height of the liquefied gas storage tank, and contraction/expansion in the vertical direction may occur by the liquefied gas.
- the guide structure may have a structure in which it is constrained in a horizontal direction with respect to the lower end of the pump tower and is allowed to move in an up-down direction.
- the pump tower since the lower end of the pump tower is not fixed to the guide structure, the pump tower is substantially in a suspended form with only the upper end fixed to the dome, and structural stability may be a problem. Therefore, with respect to the pump tower and guide structure, various research and development that can improve structural stability and the like are in progress.
- the present invention was created to solve the problems of the prior art as described above, and an object of the present invention is to improve structural stability and the like by improving a structure that can guide the lower end of the pump tower in the liquefied gas storage tank.
- a liquefied gas storage tank comprises: a wall having a storage space for accommodating the liquefied gas and having a dome formed on the upper surface for the inflow and outflow of the liquefied gas; a pump tower having an upper end fixed to the dome and provided with a pipe for loading and unloading of liquefied gas and a discharge pump for unloading of liquefied gas; and a rotary bearing lower portion provided on the wall forming the bottom of the storage space to constrain the lower end of the pump tower, wherein the pump tower is guided so that horizontal movement is restricted by the lower portion of the rotary bearing and vertical movement is allowed It has a rotary bearing upper part that becomes, and the lower part of the rotary bearing includes a plurality of restraining parts arranged radially with respect to a vertical center and provided in parallel with the vertical center, each having a plurality of restraining surfaces, between the plurality of restraining parts. It is characterized in that the upper part of the rotary bearing is characterized in that the upper part of
- the lower part of the rotary bearing is fixed to the wall so as to protrude inward from the wall and a fixing part having a circular cross section; And it may include the plurality of restraining parts radially disposed around the fixing part.
- the constraining unit may have an arc shape connecting a pair of the constraining surfaces that are spaced apart at a predetermined angle.
- the restraint portion may be provided in point symmetry with respect to the vertical center.
- a liquefied gas storage tank comprises: a wall having a storage space for accommodating the liquefied gas and having a dome formed on the upper surface for the inflow and outflow of the liquefied gas; a pump tower having an upper end fixed to the dome and provided with a pipe for loading and unloading of liquefied gas and a discharge pump for unloading of liquefied gas; and a rotary bearing lower portion provided on the wall forming the bottom of the storage space to constrain the lower end of the pump tower, wherein the pump tower is guided so that horizontal movement is restricted by the lower portion of the rotary bearing and vertical movement is allowed It has a rotary bearing upper part that becomes, the lower part of the rotary bearing is radially arranged with respect to a vertical center and provided in parallel with the vertical center and has a plurality of restraining surfaces for restraining the upper part of the rotary bearing, the upper part of the rotary bearing, the upper part, A plurality of seating parts protruding downward of the
- the seating portion may include: a protrusion vertically protruding downward of the pump tower; and a reinforcing rib provided at an upper end of the protrusion, and the seating surface is provided perpendicular to the protrusion to form a T-shape with the protrusion.
- it may further include a reinforcing plate provided parallel to the protrusion and on which the seating surface is installed.
- the reinforcing part may be provided to connect the plurality of seating parts that are spaced apart to have a 90 degree angle.
- it may have a shape provided to be bent or bent at least once in order to connect the plurality of seating parts disposed at different angles.
- the seating portion may be provided in point symmetry with respect to the vertical center.
- a liquefied gas storage tank comprises: a wall having a storage space for accommodating the liquefied gas and having a dome formed on the upper surface for the inflow and outflow of the liquefied gas; a pump tower having an upper end fixed to the dome and provided with a pipe for loading and unloading of liquefied gas and a discharge pump for unloading of liquefied gas; and a rotary bearing lower portion provided on the wall forming the bottom of the storage space to constrain the lower end of the pump tower and provided with a fuel pump for supplying liquefied gas to the engine, wherein the rotary bearing lower portion is based on a vertical center a restraining part having a plurality of restraining surfaces arranged radially as and provided in parallel with the vertical center to restrain the lower end of the pump tower; an extension portion extending in a direction away from the vertical center from the restraint portion; and a pump support part fixed to the extension part and supporting the fuel pump.
- a plurality of the restraining parts may be provided to be radially disposed with respect to the vertical center, and the extension part may be provided to extend from any one of the restraining parts.
- the pump support part may have a U-shape surrounding the fuel pump, and a reinforcement part may be provided around the fuel pump in parallel with a load direction of the fuel pump.
- the lower portion of the rotary bearing further includes a level gauge support for supporting a level gauging pipe for measuring the level of the liquefied gas in the storage space, and the pump support portion, based on a portion surrounding the fuel pump
- a level gauge support for supporting a level gauging pipe for measuring the level of the liquefied gas in the storage space
- the pump support portion based on a portion surrounding the fuel pump
- One side may be fixed to the extension part and the level gauge support part may be fixed to the other side displaced from the one side.
- the fuel pump in addition to the function of supplying the liquefied gas stored in the storage space to the engine, a stripping function for discharging the liquefied gas remaining in the storage space to the outside or the liquefied gas at the bottom of the storage space, the The spraying function that circulates to the upper part of the storage space can be implemented in a complex way.
- a ship according to an aspect of the present invention is characterized in that it has the liquefied gas storage tank.
- the liquefied gas storage tank and the ship including the same according to the present invention are provided on the lower end of the pump tower and the inner floor of the liquefied gas storage tank, and by improving the shape of the portion guiding the lower end of the pump tower, the pump tower Provides stable support.
- FIG. 1 is a perspective view of a liquefied gas storage tank according to the present invention.
- Figure 2 is a partial perspective view of the pump tower according to the first embodiment of the present invention.
- FIG 3 is a cross-sectional view of the pump tower according to the first embodiment of the present invention.
- FIG. 4 is a perspective view of a lower portion of a rotary bearing according to a first embodiment of the present invention.
- FIG. 5 is a plan view of a lower portion of a rotary bearing according to a first embodiment of the present invention.
- FIG. 6 is a partial perspective view of the pump tower according to the first embodiment of the present invention.
- FIG. 7 is a bottom view of the pump tower according to the first embodiment of the present invention.
- FIG 8 is a side view of a lower portion of a pump tower and a rotary bearing according to a second embodiment of the present invention.
- FIG. 9 is a bottom view of the pump tower according to the second embodiment of the present invention.
- FIG. 10 is a partial perspective view of a pump tower according to a second embodiment of the present invention.
- FIG. 11 is a perspective view of a lower portion of a rotary bearing according to a third embodiment of the present invention.
- FIG. 12 is a plan view of a lower portion of a rotary bearing according to a third embodiment of the present invention.
- FIG. 13 is a cross-sectional view of a lower portion of a pump tower and a rotary bearing according to a fourth embodiment of the present invention.
- the present invention includes a ship equipped with a liquefied gas storage tank to be described below.
- the ship may be a ship that uses at least liquefied gas as a propulsion fuel/power generation fuel, and it is a concept that includes all gas carriers, merchant ships that transport cargo or people other than gas, FSRUs, FPSOs, bunkering vessels, and offshore plants. .
- the vertical center means a certain point on the vertical center line of the lower portion of the rotary bearing, and the vertical center line of the lower portion of the rotary bearing may not coincide with the vertical center line of the pump tower.
- FIG. 1 is a perspective view of a liquefied gas storage tank according to the present invention
- Figure 2 is a partial perspective view of a pump tower according to a first embodiment of the present invention
- Figure 3 is a cross-sectional view of the pump tower according to a first embodiment of the present invention to be.
- the liquefied gas storage tank 1 of the present invention includes a wall 10 and a pump tower 20 .
- the wall 10 forms a storage space for accommodating the liquefied gas.
- the wall 10 may form a storage space through at least six surfaces, and for example, the storage space may have an octagonal cross section.
- the wall 10 may have a thermal insulation structure to protect the liquefied gas stored therein from evaporation due to heat penetration.
- the wall 10 may have a double insulation structure and a double sealing structure.
- the wall 10 is a secondary heat insulating wall (not shown) provided on the hull side, a secondary barrier (not shown) provided inside the secondary insulating wall, a primary provided inside the secondary barrier
- a structure including a heat insulating wall (not shown) and a primary barrier (not shown) provided inside the primary heat insulating wall may be provided.
- the insulation wall may use an insulation block such as polyurethane foam, or an insulation box containing an insulation material such as perlite.
- an insulation block such as polyurethane foam
- an insulation box containing an insulation material such as perlite.
- a metal sheet such as SUS or INVAR, or a composite material mixed with aluminum and glass fiber, etc. can be used.
- An opening (not shown) is formed in the wall 10 constituting the upper surface of the storage space, a dome 10a protruding upwardly in the opening is provided, and a coaming (not shown) is provided in the dome 10a coaming. ) The opening may be closed while the cover (not shown) is seated.
- the dome 10a cover is provided so that various pipes provided in the pump tower 20 to be described later pass through, and the liquefied gas is discharged from the storage space to the outside through the pipe passing through the dome 10a, or from the outside to the storage space. can be introduced into In addition, boil-off gas generated in the storage space may also be discharged to the outside through a pipe penetrating the dome 10a.
- the pump tower 20 has an upper end fixed to the dome 10a and a pipe for loading and unloading liquefied gas.
- the pump tower 20 may be provided in the form of a column including pipes extending vertically from the dome 10a to the bottom of the storage space, and a truss structure that interconnects the pipes.
- the pump tower 20 may be provided such that only the upper end is fixed to the dome 10a, and the lower end is not fixed. That is, the lower end of the pump tower 20 is provided so as not to be constrained at least in the vertical direction. This is to prepare for the pump tower 20 corresponding to the height of the storage space to contract/expand due to the cryogenic liquefied gas.
- a rotary bearing lower portion 30 may be provided on the wall 10 forming the bottom of the storage space.
- the lower rotary bearing 30 permits vertical movement of the lower end of the pump tower 20, but restricts horizontal movement, thereby minimizing rotation or shaking of the pump tower 20.
- the rotary bearing lower part 30 will be described in detail below with reference to FIG. 4 and the like.
- the pump tower 20 is provided to include a plurality of pipes.
- the pump tower 20 includes an unloading pipe 21 , an auxiliary pipe 22 , and a loading pipe 23 .
- the unloading pipe 21 is provided for unloading of the liquefied gas, and may be provided in plurality of at least two or more.
- the pair of unloading pipes 21 may be provided to be mutually backed up.
- a discharge pump 24 may be assigned to each unloading pipe 21 , and the discharge pump 24 is provided at a position displaced from the unloading pipe 21 in the vertical direction, and the lower portion of the unloading pipe 21 is After being bent obliquely toward the discharge pump 24 , it may be provided to be connected to the discharge pump 24 .
- the auxiliary pipe 22 is provided to prepare for a case in which a problem occurs in unloading through the unloading pipe 21 , and may be referred to as an emergency pipe.
- an emergency after the emergency discharge pump is introduced into the auxiliary pipe 22, the liquefied gas in the storage space can be discharged to the outside through the emergency discharge pump. 21) A large contrast diameter may be provided.
- Auxiliary pipes 22 are provided in a smaller number than the unloading pipes 21, for example, one may be provided. At this time, the pair of unloading pipes 21 and one auxiliary pipe 22 may be arranged in a triangle.
- the loading pipe 23 loads the liquefied gas into the storage space.
- the loading pipe 23 may have a hollow shape with an open bottom in order to deliver the liquefied gas flowing in from the outside to the inner bottom of the storage space.
- the loading pipe 23 is provided on one side of the auxiliary pipe 22 , and when the pair of unloading pipes 21 are triangularly arranged with the auxiliary pipe 22 , the loading pipe 23 is also a pair of unloading pipes (21) and can be triangularly arranged.
- the loading pipe 23 may be disposed outside the triangle formed by the pair of unloading pipes 21 and the auxiliary pipe 22, and may be fixedly installed on the auxiliary pipe 22 through a horizontal reinforcement. .
- the loading pipe 23 may be provided at a position farther than the auxiliary pipe 22 from the vertical center of the pump tower 20 , which is discharged from the cryogenic liquefied gas flowing into the storage space through the loading pipe 23 . (24) to protect the back.
- the loading pipe 23 may be disposed to be spaced apart from the auxiliary pipe 22 by a certain distance d or more, thereby making the discharge pump 24 from cryogenic liquefied gas more efficient can be protected with
- the predetermined distance d may be determined based on the width of the pipe support 251 and the like.
- the pump tower 20 includes a gas sampling pipe (not shown), a level gauging pipe (not shown), and a discharge pump 24 in addition to the unloading pipe 21 , the auxiliary pipe 22 , and the loading pipe 23 as above.
- a gas sampling pipe (not shown), a level gauging pipe (not shown), and a discharge pump 24 in addition to the unloading pipe 21 , the auxiliary pipe 22 , and the loading pipe 23 as above.
- ) may include a cable pipe (not shown) for power/signal transmission, and the like.
- a rotary bearing upper portion 25 is provided at the lower end of the pump tower 20 .
- the rotary bearing upper part 25 is configured to support the unloading pipe 21 and the like, and to restrict movement in the horizontal direction by the rotary bearing lower part 30 to be described later.
- the rotary bearing upper portion 25 is provided at the lower portion of the unloading pipe 21 and is guided so that horizontal movement is restricted and vertical movement is allowed by the rotary bearing lower portion 30 .
- a pair of unloading pipes 21 and an auxiliary pipe 22 may be fixedly installed on the upper portion 25 of the rotary bearing, and the loading pipe 23 is connected to the upper portion 25 of the rotary bearing through the auxiliary pipe 22 . can be indirectly fixed to
- the discharge pump 24 may be fixedly installed on the rotary bearing upper portion 25 . Accordingly, the height of the lower end of the unloading pipe 21 and the like and the discharge pump 24 may be varied during contraction/expansion of the pump tower 20 .
- the rotary bearing upper part 25 includes a pipe support part 251 and a connection part 252 .
- a pair of the pipe support parts 251 are provided in parallel with the discharge pump 24 interposed therebetween, and the pipe support part 251 on one side supports the plurality of unloading pipes 21 .
- the pipe support part 251 on the other side may support the auxiliary pipe 22 or the loading pipe 23 .
- the pipe support part 251 on one side is provided to support the unloading pipe 21 at both ends. That is, the pipe support part 251 on one side is provided in the form of interconnecting a pair of unloading pipes 21 .
- the pipe support part 251 on the other side is provided to support the auxiliary pipe 22 in the center.
- the central part of the pipe support part 251 on the other side may be provided in a recessed form toward the vertical center of the pump tower 20 , and the auxiliary pipe 22 may be located in the recessed part.
- the pair of pipe support parts 251 may be provided in an open frame structure to reduce weight and the like. Through this, the pipe support unit 251 may omit a closed space to increase work efficiency.
- the pair of pipe support parts 251 are based on a rectangular parallelepiped shape, and the pipe support part 251 on one side has an unloading pipe 21 at the corner to effectively support the unloading pipe 21 provided at both ends. It may be recessed in a curved shape to at least partially cover it.
- the lower surface of the pipe support part 251 on one side may have an expanded cross-sectional area, and the expanded cross-sectional area is provided in a shape to cover all of the lower end surface of the unloading pipe 21, so that the unloading pipe 21 It can stably support the lower end of the
- the lower surface of the pipe support 251 on the other side may also have an expanded cross-sectional area, but it may not be used to support the auxiliary pipe 22 and the like, but may be provided for structural strength of the pipe support 251 itself.
- the auxiliary pipe 22 is located in a portion recessed toward the vertical center in the pipe support part 251 on the other side, and through various structures such as a support (not shown) provided to be inclined in the vertical direction, the pipe support part 251. It can be fixed to the upper surface.
- connection part 252 is provided perpendicular to the pair of pipe support parts 251 provided in parallel to connect the pipe support parts 251, whereby the rotary bearing upper part 25 is, a pair of pipe support parts 251 and It may have an H-shape by the connection part 252 .
- a pair of discharge pumps 24 may be disposed between the pair of pipe support parts 251 , and the pair of discharge pumps 24 may be disposed with a smaller distance from each other compared to the unloading pipe 21 , and each At least a portion of the unloading pipe 21 is branched obliquely and is connected to each discharge pump 24 .
- connection part 252 may be provided to connect the pair of pipe support parts 251 between the pair of discharge pumps 24 . At this time, the connection part 252 may also be provided in an open frame structure in order to suppress the formation of a closed space like the pipe support part 251 .
- the pair of pipe support parts 251 and the connection part 252 may partially form a U-shape or a U-shape.
- the rotary bearing upper part 25 is provided such that a pair of pipe support parts 251 and a connection part 252 surround the discharge pump 24 .
- the pipe support 251 and the connecting portion 252 have brackets 253 extending upward to reinforce structural strength. At this time, the bracket 253 may be provided to surround the discharge pump 24 , thereby sufficiently supporting the load of the discharge pump 24 .
- bracket 253 is fixed to the unloading pipe 21 , the auxiliary pipe 22 , and the like, so that it is possible to sufficiently hold the horizontal shaking of the unloading pipe 21 .
- the shape of the bracket 253 is not particularly limited.
- the upper end of the bracket 253 is provided in parallel at the same height as the upper end of the discharge pump 24, and the lower end of the discharge pump 24 is provided in parallel at the same height as the lower end of the pipe support part 251, the discharge pump ( 24) can be stably fixed to the lower end and upper end of the pipe support unit 251 and the upper end of the bracket 253 through a separate fixing structure, respectively.
- the discharge pump 24 may have a side surface fixed to the upper end of the pipe support part 251 , and the structure in which the discharge pump 24 is fixed to the rotary bearing upper part 25 is not particularly limited.
- the unloading pipe 21, the auxiliary pipe 22 and the loading pipe 23, and the discharge pump 24 may be fixed to the upper part 25 of the rotary bearing, and the unloading pipe 21 due to the cryogenic liquefied gas ) and the like when the discharge pump 24 can be varied in height up and down.
- the liquefied gas remaining at the bottom of the storage space may be all discharged by the stripping function of the fuel pump 26 to be described in another embodiment below, which will be described later.
- FIG. 4 is a perspective view of a lower portion of the rotary bearing according to the first embodiment of the present invention
- FIG. 5 is a plan view of the lower portion of the rotary bearing according to the first embodiment of the present invention.
- the rotary bearing lower portion 30 is fixedly installed on the wall 10 forming the bottom of the storage space, and restricts the horizontal movement of the rotary bearing upper portion 25 and allows vertical movement By doing so, it is possible to prevent horizontal movement or rotation with respect to the lower end of the pump tower 20 .
- the rotary bearing lower part 30 includes a fixing part 31 and a restraining part 32 .
- the fixing part 31 is fixed to the wall 10 so as to protrude inward from the wall 10 .
- the fixing part 31 may have a lower end fixed to an outer wall (eg, a hull) of the liquefied gas storage tank 1 , and an upper end may be located inside the storage space while penetrating the wall 10 .
- the fixing part 31 may be provided such that at least a portion exposed in the storage space has a circular cross section, and the fixing part 32 may be radially disposed around the fixing part 31 .
- the restraining part 32 is provided in plurality so as to be radially disposed around the fixing part 31 .
- the restraining part 32 has a restraining surface 321 .
- the restraining surface 321 is provided to lie on an imaginary plane on which the vertical center line is placed, and a plurality of restraints 32 are provided in one restraint portion 32 .
- a plurality of restraining surfaces 321 provided on the restraining unit 32 are radially arranged with respect to the vertical center, and may restrain the upper portion 25 of the rotary bearing.
- the restraining part 32 may be provided in a form that connects a pair of restraining surfaces 321 spaced apart at a predetermined angle with respect to a vertical center, and this restraining part 32 is in the form of an arc (or a cut donut). shape, etc.).
- the restraining unit 32 is provided with a pair of restraining surfaces 321, but it is also possible to have a shape such as a triangle or a square.
- a pair of restraining surfaces 321 provided on one restraining part 32 have a 90 degree angle as shown in the figure, according to the shape of the outer surface far from the vertical center in the restraining part 32, the restraining part 32 ) can be determined in various ways.
- the restraining part 32 may be provided with point symmetry with respect to the vertical center while radially disposed with respect to the fixing part 31 .
- the constraint 32 is disposed in the first and third quadrants, and the second and fourth quadrants may be empty as a space between the constraint 32 .
- the rotary bearing upper part 25 is seated in the space between the empty restraining parts 32, and when looking at the cross section in the horizontal direction from the part where the restraining part 32 is provided, the restraining surface 321 is the rotary bearing upper part ( 25) can be encountered.
- the rotary bearing upper part 25 has a seating surface 2541 in a portion facing the restraining surface 321, and forms a contact area with a smaller area than the restraining surface 321 to be in contact with the restraining surface 321.
- the restraining surface 321 may limit the horizontal movement of the rotary bearing upper portion 25 while abutting the rotary bearing upper portion 25 . That is, as shown in Figure 5, when the translation / rotation load of the pump tower 20 in the direction of the arrow acts, the restraining surface 321 blocks the movement of the upper part of the rotary bearing 25, so that the lower part of the rotary bearing 30 is It is possible to stably fix the position of the lower end of the pump tower 20 .
- the restraining surface 321 is provided to have a material / surface (synthetic resin such as HDPE) that allows the vertical movement of the rotary bearing upper part 25, It is possible to prepare for the contraction of the pump tower (20).
- This rotary bearing lower part 30 has a relatively simple shape having an arc-shaped restraining part 32 on the cylindrical fixed part 31, and with only two restraining parts 32, translational movement through four-point sliding support. and suppression of rotational movement is possible.
- the pipe support part 251 and the connection part 252 of the upper part 25 of the rotary bearing described in FIG. 3 are the upper part of the upper part 25 of the rotary bearing, and the content to be described below is the upper part of the rotary bearing 25.
- the following configuration may be installed on the lower surface of the pipe support part 251 or the connection part 252 .
- Figure 6 is a partial perspective view of the pump tower according to the first embodiment of the present invention
- Figure 7 is a bottom view of the pump tower according to the first embodiment of the present invention.
- the rotary bearing upper portion 25 provided on the lower surface of the pump tower 20 may be provided in a shape corresponding to the rotary bearing lower portion 30 in FIGS. 4 and 5 . have.
- the rotary bearing upper portion 25 includes a seating portion 254 .
- the seating portion 254 has a plurality of seating surfaces 2541 , and the seating surface 2541 may be configured to face the constraint surface 321 described above.
- the seating portion 254 has an arc shape to correspond to the restraining portion 32 of the lower portion of the rotary bearing 30 , and protrudes downward of the pump tower 20 so as to be inserted between the plurality of restraining surfaces 321 .
- the seating portion 254 has a pair of seating surfaces 2541 spaced apart at an angle with respect to the vertical center so as to correspond to the restraining portion 32 connecting the pair of restraining surfaces 321 in an arc shape. It can be made of a structure connected in the form.
- the seating portion 254 a plurality of seating portions 254 may be radially arranged with respect to the vertical center, but the rotary bearing upper portion 25 is a seating portion at a position spaced apart by a predetermined radius from the vertical center. 254 may be radially disposed. This is to avoid interference with the fixing part 31 .
- the seating portion 254 of the upper portion 25 of the rotary bearing may be provided symmetrically with respect to a vertical center to correspond to the restraint portion 32 of the lower portion 30 of the rotary bearing.
- the constraint 32 when the quadrant is virtually set based on the vertical center, the constraint 32 is disposed in the first and third quadrants, and the second and fourth quadrants are constrained ( 32), it may be empty as a space between the second and fourth quadrants.
- the upper part 25 of the rotary bearing effectively supports the unloading pipe 21 and the auxiliary pipe 22 through the pair of pipe support parts 251 and the connection part 252. Stable support can be implemented.
- the lower part of the rotary bearing 30 has an arc-shaped restraining part 32, and an arc-shaped seating part 254 provided on the rotary bearing upper part 25 is provided, and a pair of restraints is provided.
- a four-point sliding support between the restraining surface 321 of the restraining part 32 and the seating surface 2541 of the seating part 254 is implemented to pump the pump The horizontal movement of the lower end of the tower 20 can be effectively taken.
- Figure 8 is a side view of the lower part of the pump tower and the rotary bearing according to the second embodiment of the present invention
- Figure 9 is a bottom view of the pump tower according to the second embodiment of the present invention
- Figure 10 is a second embodiment of the present invention It is a partial perspective view of a pump tower according to an example.
- a rotary bearing upper part 25 different from that of the previous embodiment may be provided.
- the rotary bearing upper portion 25 of this embodiment has a seating portion 254 and a reinforcing portion 255 .
- the seating portion 254 protrudes downward of the pump tower 20 so as to be inserted between the plurality of restraining surfaces 321 , and has a seating surface 2541 facing the restraining surface 321 .
- the seating portion 254 includes a protrusion 2542 vertically protruding downward of the pump tower 20 , and a seating surface 2541 is provided perpendicular to the protrusion 2542 .
- the seating surface 2541 may include a peripheral portion 2541a made of a metal material, and a contact portion 2541b provided inside the peripheral portion to face the restraining surface 321 and made of an elastic material.
- the contact portion 2541b may be made of a material (synthetic resin such as HDPE) that can allow sliding in the vertical direction, and the peripheral portion 2541a may be made of SUS, etc., and a synthetic resin provided on the seating surface 2541 The contact portion 2541b made of a material may come into contact with the restraining surface 321 .
- synthetic resin such as HDPE
- At least one reinforcing rib 2543 may be provided at the upper end of the protrusion 2542 .
- the reinforcing rib 2543 may be provided to limit horizontal deformation of the vertically protruding protrusion 2542 .
- a seating surface 2541 may be vertically provided on the protrusion 2542 , and the protrusion 2542 and the seating surface 2541 may be provided to form a T-shape.
- a reinforcing plate 2544 is provided between the seating surface 2541 and the protrusion 2542 .
- the reinforcing plate 2544 is provided to be parallel to the protrusion 2542 , and a seating surface 2541 may be installed therein.
- the protrusion 2542 may protrude downward of the pump tower 20 in the form of a plate. At this time, if the thickness of the protrusion 2542 is not sufficient, the stress concentrated on the connection portion of the protrusion 2542 and the seating surface 2541 is applied. There are problems that cannot be tolerated. Therefore, in the present embodiment, by adding the reinforcing plate 2544 to the portion where the seating surface 2541 is provided in the protrusion 2542 , the thickness of the protrusion 2542 can be reinforced to prepare for stress concentration.
- the reinforcing plate 2544 may be provided parallel to the protrusion 2542 , or may be provided in a stacked structure on the protrusion 2542 .
- the reinforcing plate 2544 may be provided on both sides of the protrusion 2542 to sufficiently secure the thickness of the portion where the seating surface 2541 is installed.
- the seating portion 254 is provided in plurality, and is disposed at a position spaced apart from the vertical center by a predetermined distance. In addition, at least two of the plurality of seating parts 254 may be disposed so that the seating surfaces 2541 have different angles from each other.
- the seating portion 254 has a vertical seating surface 2541 , a seating portion 254 disposed above and below the vertical center, and a horizontal seating surface 2541 and is vertical It may have seating portions 254 disposed on the left and right of the center.
- the plurality of seating parts 254 are provided symmetrically with respect to the vertical center.
- the seating surface 2541 of the seating part 254 may be disposed so as to be shifted from the vertical center. That is, even if the seating surface 2541 is virtually extended, it may be provided so as not to meet the vertical center. That is, the horizontal seating surfaces 2541 shown to the left and right of the vertical center in FIG. 9 are respectively biased downward/upward compared to the vertical center, and the vertical seating surfaces 2541 shown above and below the vertical center in FIG. 9 . may be biased to the right/left respectively relative to the vertical center.
- a plurality of seating parts 254 having seating surfaces 2541 of different angles may be connected by a reinforcing part 255 .
- the reinforcing part 255 may be provided to connect a plurality of seating parts 254 that are spaced apart to have a 90 degree angle.
- the seating surface 2541 of the seating part 254 is displaced from the vertical center, and the two seating parts 254 disposed at different angles are 90 degrees based on a specific point shifted from the vertical center. It may be open to have.
- the reinforcing part 255 may be provided to interconnect the protrusions 2542 of the two seating parts 254 having different angles, and to be bent or bent at least once to connect the plurality of seating parts 254 . It may have a prepared form.
- the reinforcing portion 255 when a portion bent at 90 degrees is provided in the reinforcing portion 255, when trying to restrict the rotational movement of the pump tower 20, there is a risk that stress may be excessively concentrated in the reinforcing portion 255, the reinforcing portion ( 255) may have a shape bent at least twice at an obtuse angle. Alternatively, the reinforcing part 255 may be provided in an arc shape.
- the rotary bearing upper part 25 uses a reinforcing part 255 for connecting a pair of seating parts 254, unlike the seating part 254 in the previous embodiment in which the overall arc shape is used.
- the structure is simplified, but by sufficiently securing structural strength through the shape of the reinforcing rib 2543 and the reinforcing part 255 , the horizontal movement of the lower end of the pump tower 20 can be effectively restrained.
- FIG. 11 is a perspective view of a lower part of a rotary bearing according to a third embodiment of the present invention
- FIG. 12 is a plan view of a lower part of the rotary bearing according to a third embodiment of the present invention.
- the rotary bearing lower part 30 according to the third embodiment of the present invention is compared with the rotary bearing lower part 30 described in the first embodiment above, the restraining part 32 It further includes an extension part 33 and a pump support part 34 while having the same.
- the constraint part 32 included in the rotary bearing lower part 30 of this embodiment is replaced with the previous content.
- the extension part 33 extends in a direction away from the vertical center from the restraint part 32 .
- the extension part 33 is provided to extend only from one of the pair of restraining parts 32 radially arranged with respect to the vertical center, and thereby the extension part 33 is provided with the restraining part ( 32) forms an asymmetric shape based on the vertical center.
- the extension part 33 may be manufactured integrally with any one of the restraining parts 32 as shown in the drawing, or may be separately manufactured and then provided to be connected to the restraining part 32 by bolts, welding, etc., unlike the drawings. .
- the extension part 33 is provided at a position spaced apart from the vertical center by a predetermined distance so that a fuel pump (not shown) to be described later does not interfere with the flow of liquefied gas through a pipe provided in the pump tower 20. It may be a configuration that allows it to be placed, and also a configuration that implements a firm coupling of the pump support part 34 .
- the extension direction of the extension part 33 may be a direction shifting from the vertical center, and when described with reference to FIG. 12 as an example, the extension part 33 extends horizontally in the left direction, and the extension direction is the lower part of the rotary bearing ( 30) is biased downward from the vertical center.
- the pump support part 34 is fixed to the extension part 33 and supports the fuel pump 26 .
- a stripping/spray pump is provided in the liquefied gas storage tank 1 for stripping discharging the liquefied gas remaining in the storage space to the outside or spraying circulating the liquefied gas at the bottom of the storage space to the upper portion of the storage space.
- a fuel pump 26 for supplying the liquefied gas stored in the storage space to the engine may be provided in the liquefied gas storage tank 1 .
- one pump may be provided to complexly implement the functions of the stripping/spray pump and the fuel pump 26 .
- the fuel pump 26 performing a complex function such as stripping may be fixed by the pump support part 34 .
- At least part of the pump support part 34 has a U-shape surrounding the fuel pump 26 , and at least a part of the circumference of the fuel pump 26 may be fixedly installed to the pump support part 34 by bolting or the like.
- the fuel pump 26 and the pump support part 34 may be connected using a detachable fastening method (bolting, etc.).
- the pump support part 34 may be provided with a reinforcement part 341 to stably support the fuel pump 26 .
- the reinforcing part 341 is provided in parallel with the load direction of the fuel pump 26 in the vicinity of the fuel pump 26 , and may be provided vertically, for example. Accordingly, since the pump support part 34 prevents sagging due to the load of the fuel pump 26 , it is possible to stably support the fuel pump 26 at a position above the bottom of the wall 10 .
- the rotary bearing lower portion 30 of the present embodiment may further include a level gauge support portion (35).
- the pump tower 20 may be provided with a level gauging pipe for measuring the liquefied gas level (liquid level) of the storage space as described above, and the level gauge support 35 supports the level gauging pipe and extends ( 33) and may be provided to be fixed to the wall 10 through the fixing part 31 .
- the level gauging pipe like other pipes, is contracted/expanded by cryogenic liquefied gas, so the height can be changed.
- the lower end of the level gauging pipe is fixed by the level gauge support 35 , and a structure (such as a bellows structure or a telescopic structure) that allows contraction/expansion in at least a portion in the vertical direction may be applied.
- the level gauging pipe may be provided such that, similarly to other pipes of the pump tower 20 , the upper end is fixed to the dome 10a and the lower end thereof is limited to only horizontal movement by the level gauge support 35 .
- one side of the level gauge support part 35 may be provided in the form of a hollow barrel surrounding the lower end of the level gauge pipe.
- the level gauge support 35 may be fixed to the extension 33 through the pump support 34 . That is, one side of the pump support part 34 fastened to the extension part 33 is fixed to the extension part 33 based on the portion surrounding the fuel pump 26, and the level gauge support part 35 on the other side displaced from the one side. can be fixed.
- the right side of the pump support part 34 is connected to the extension part 33
- the level gauge support part 35 may be connected to the upper side of the pump support part 34 .
- the coupling between the pump support part 34 and the extension part 33 and the coupling between the pump support part 34 and the level gauge support part 35 may use the same bolting fastening method, or the pump support part 34 and the level gauge support part ( 35 , unlike the coupling between the pump support part 34 and the extension part 33 , welding or the like may be used.
- the number of pumps is reduced by implementing stripping / spraying and fuel supply with one fuel pump 26 , and a pump support part for supporting the fuel pump 26 on the rotary bearing lower part 30 .
- a pump support part for supporting the fuel pump 26 on the rotary bearing lower part 30 .
- FIG. 13 is a cross-sectional view of a lower portion of a pump tower and a rotary bearing according to a fourth embodiment of the present invention.
- the rotary bearing lower part 30 according to the fourth embodiment of the present invention includes a fixing part 31 fixed to the wall 10 so as to protrude inwardly from the wall 10 . It is similar to the previous embodiment.
- the rotary bearing lower part 30 of this embodiment can limit the horizontal movement of the lower end of the pump tower 20 only by the fixing part 31 without a separate restraining part 32 .
- the rotary bearing upper portion 25 of the lower end of the pump tower 20 includes an inlet portion 256 having a hollow shape so that the fixing portion 31 is inserted and seated. Therefore, as the fixing part 31 is positioned in the inlet part 256, the inner surface of the inlet part 256 and the outer surface of the fixing part 31 face each other, so the fixing part 31 and the inlet part 256 have a double tube structure. Through this, the horizontal movement of each other can be constrained.
- the fixed part 31 of the lower part 30 of the rotary bearing can slide on the outer surface facing the inner surface of the inlet part 256 to allow the vertical movement of the upper part 25 of the rotary bearing 36, etc. surface can be applied.
- the inlet portion 256 and the fixed portion 31 are provided in a circular shape, the rotational movement of the pump tower 20 may be permitted.
- the fixed portion 31 or the inlet portion 256 is non-circular. It is provided to have a cross section of Therefore, the horizontal movement (translation and rotation) of the rotary bearing upper portion 25 with respect to the rotary bearing lower portion 30 can be sufficiently constrained.
- the non-circular cross-section may mean an elliptical or polygonal shape, or a plurality of circular cross-sections may also correspond to the non-circular cross-section referred to in the present specification.
- the vertical center of the fixed part 31 is provided to be shifted from the vertical center of the pump tower 20, thereby suppressing the rotation of the lower end of the pump tower 20 through the inlet 256 and the fixing part 31 You may.
- the centers of the fixed part 31 and the inlet 256 are shifted from the center of rotation of the pump tower 20, so the inlet 256 and the fixed part 31 have a circular cross section. Even having a can suppress the rotation of the pump tower (20).
- the inlet portion 256 may be provided in a porous shape having one or more through holes 2561 on the periphery of the inner surface facing the rotary bearing upper portion 25 . Through this, the weight of the upper part 25 of the rotary bearing may be reduced.
- the inlet 256 may be provided with a pump support 257 for supporting the discharge pump 24 or the fuel pump 26 on one side.
- the pump support 257 may be inserted and installed in any one of the through-holes 2561 provided in the inlet 256 .
- the discharge pump 24 is a configuration fixed to the unloading pipe 21 , when the pump support 257 supports the discharge pump 24 , the pump support 257 is firmly fixed to the inlet 256 to be installed.
- the fuel pump 26 of this embodiment may be a complex pump that implements a function such as stripping as described in the previous embodiment, and is fixed to the wall 10 (via the lower part 30 of the rotary bearing). , when the pump support 257 supports the fuel pump 26 , the pump support 257 may be slidable up and down in the through hole 2561 , but horizontal movement may be restricted.
- the lower part of the rotary bearing 30 and the upper part of the rotary bearing 25 are inserted in a double tube structure so that vertical movement is allowed like a telescopic structure while horizontal movement is restricted, but a non-circular cross-section or vertical center Rotational movement can also be stably restricted through misalignment or the like.
- the present invention may include a combination of at least any one or more embodiments and known techniques known to those skilled in the art, or a combination of at least two or more embodiments, as additional embodiments, in addition to the embodiments described above.
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Abstract
Description
Claims (16)
- 액화가스를 수용하는 저장공간을 형성하며 상면에 액화가스의 유출입을 위한 돔이 형성되는 벽체;상단이 상기 돔에 고정되며 액화가스의 로딩 및 언로딩을 위한 파이프 및 액화가스의 언로딩을 위한 배출펌프가 마련되는 펌프타워; 및상기 저장공간의 바닥을 이루는 상기 벽체에 마련되어 상기 펌프타워의 하단을 구속하는 로터리베어링 하측부를 포함하며,상기 펌프타워는,상기 로터리베어링 하측부에 의해 수평 움직임은 구속되고 수직 움직임은 허용되도록 가이드 되는 로터리베어링 상측부를 갖고,상기 로터리베어링 하측부는,수직 중심을 기준으로 방사상으로 배치되고 상기 수직 중심과 나란하게 마련되어 복수의 구속면을 각각 갖는 복수의 구속부를 포함하며, 상기 복수의 구속부 사이에 상기 로터리베어링 상측부가 안착되도록 하는 것을 특징으로 하는 액화가스 저장탱크.
- 제 1 항에 있어서, 상기 로터리베어링 하측부는,상기 벽체에서 내측으로 돌출되도록 상기 벽체에 고정되며 원형 단면을 갖는 고정부; 및상기 고정부의 둘레에 방사상으로 배치되는 상기 복수의 구속부를 포함하는 것을 특징으로 하는 액화가스 저장탱크.
- 제 1 항에 있어서, 상기 구속부는,일정 각도로 벌어져 있는 한 쌍의 상기 구속면을 연결하는 호 형태를 갖는 것을 특징으로 하는 액화가스 저장탱크.
- 제 1 항에 있어서, 상기 구속부는,상기 수직 중심을 기준으로 점대칭으로 마련되는 것을 특징으로 하는 액화가스 저장탱크.
- 액화가스를 수용하는 저장공간을 형성하며 상면에 액화가스의 유출입을 위한 돔이 형성되는 벽체;상단이 상기 돔에 고정되며 액화가스의 로딩 및 언로딩을 위한 파이프 및 액화가스의 언로딩을 위한 배출펌프가 마련되는 펌프타워; 및상기 저장공간의 바닥을 이루는 상기 벽체에 마련되어 상기 펌프타워의 하단을 구속하는 로터리베어링 하측부를 포함하며,상기 펌프타워는,상기 로터리베어링 하측부에 의해 수평 움직임은 구속되고 수직 움직임은 허용되도록 가이드 되는 로터리베어링 상측부를 갖고,상기 로터리베어링 하측부는,수직 중심을 기준으로 방사상으로 배치되고 상기 수직 중심과 나란하게 마련되어 상기 로터리베어링 상측부를 구속하는 복수의 구속면을 가지며,상기 로터리베어링 상측부는,상기 복수의 구속면 사이에 인입되도록 상기 펌프타워의 하방으로 돌출되며 상기 구속면에 마주하는 안착면을 갖는 복수의 안착부와, 서로 다른 각도의 상기 안착면을 갖는 상기 복수의 안착부를 연결하는 보강부를 포함하는 것을 특징으로 하는 액화가스 저장탱크.
- 제 5 항에 있어서, 상기 안착부는,상기 펌프타워의 하방으로 수직하게 돌출되는 돌출부; 및상기 돌출부의 상단에 마련되는 보강리브를 갖고,상기 안착면은, 상기 돌출부에 수직하게 구비되어 상기 돌출부와 T자를 이루는 것을 특징으로 하는 액화가스 저장탱크.
- 제 6 항에 있어서, 상기 안착부는,상기 돌출부에 평행하도록 마련되며 상기 안착면이 설치되는 보강판을 더 포함하는 것을 특징으로 하는 액화가스 저장탱크.
- 제 5 항에 있어서, 상기 보강부는,90도를 갖도록 벌어져 있는 상기 복수의 안착부를 연결하도록 마련되는 것을 특징으로 하는 액화가스 저장탱크.
- 제 5 항에 있어서, 상기 보강부는,서로 다른 각도로 배치된 상기 복수의 안착부를 연결하기 위해 적어도 1회 절곡되거나 휘어지도록 마련된 형태를 갖는 것을 특징으로 하는 액화가스 저장탱크.
- 제 5 항에 있어서, 상기 안착부는,상기 수직 중심을 기준으로 점대칭으로 마련되는 것을 특징으로 하는 액화가스 저장탱크.
- 액화가스를 수용하는 저장공간을 형성하며 상면에 액화가스의 유출입을 위한 돔이 형성되는 벽체;상단이 상기 돔에 고정되며 액화가스의 로딩 및 언로딩을 위한 파이프 및 액화가스의 언로딩을 위한 배출펌프가 마련되는 펌프타워; 및상기 저장공간의 바닥을 이루는 상기 벽체에 마련되어 상기 펌프타워의 하단을 구속하며 액화가스를 엔진으로 공급하기 위한 연료펌프가 마련되는 로터리베어링 하측부를 포함하며,상기 로터리베어링 하측부는,수직 중심을 기준으로 방사상으로 배치되고 상기 수직 중심과 나란하게 마련되어 상기 펌프타워의 하단을 구속하는 복수의 구속면을 갖는 구속부;상기 구속부로부터 상기 수직 중심에서 멀어지는 방향으로 연장되는 연장부; 및상기 연장부에 고정되며 상기 연료펌프를 지지하는 펌프 지지부를 포함하는 것을 특징으로 하는 액화가스 저장탱크.
- 제 11 항에 있어서,상기 구속부는, 복수로 마련되어 상기 수직 중심을 기준으로 방사상으로 배치되며,상기 연장부는, 어느 하나의 상기 구속부로부터 연장되도록 마련되는 것을 특징으로 하는 액화가스 저장탱크.
- 제 11 항에 있어서, 상기 펌프 지지부는,적어도 일부가 상기 연료펌프를 둘러싸는 U자 형태를 갖고, 상기 연료펌프의 주변에서 상기 연료펌프의 하중 방향과 나란하게 보강부가 마련되는 것을 특징으로 하는 액화가스 저장탱크.
- 제 11 항에 있어서, 상기 로터리베어링 하측부는,상기 저장공간의 액화가스 레벨의 측정을 위한 레벨 게이징 파이프를 지지하는 레벨 게이지 지지부를 더 포함하고,상기 펌프 지지부는, 상기 연료펌프를 둘러싸는 부분을 기준으로 일측이 상기 연장부에 고정되고 상기 일측과 어긋난 타측에 상기 레벨 게이지 지지부가 고정되는 것을 특징으로 하는 액화가스 저장탱크.
- 제 11 항에 있어서, 상기 연료펌프는,상기 저장공간 내에 저장된 액화가스를 상기 엔진으로 공급하는 기능에 더하여, 상기 저장공간 내에 잔류한 액화가스를 외부로 배출하는 스트리핑 기능 또는 상기 저장공간 바닥의 액화가스를 상기 저장공간 상부로 순환하는 스프레잉 기능을 복합적으로 구현하는 것을 특징으로 하는 액화가스 저장탱크.
- 제 1 항 내지 제 5 항 중 어느 한 항의 상기 액화가스 저장탱크를 갖는 것을 특징으로 하는 선박.
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| EP21833810.1A EP4177146A4 (en) | 2020-07-03 | 2021-07-01 | LIQUEFIED GAS STORAGE TANK AND VESSEL COMPRISING SAME |
| JP2022573743A JP7466705B2 (ja) | 2020-07-03 | 2021-07-01 | 液化ガス貯蔵タンク及びそれを含む船舶 |
| US17/928,896 US12535186B2 (en) | 2020-07-03 | 2021-07-01 | Liquefied gas storage tank and ship including same |
| CN202180039028.4A CN115734913A (zh) | 2020-07-03 | 2021-07-01 | 液化气体储存罐以及包括其的船舶 |
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| KR1020200082330A KR102327624B1 (ko) | 2020-07-03 | 2020-07-03 | 액화가스 저장탱크 및 이를 포함하는 선박 |
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| US (1) | US12535186B2 (ko) |
| EP (1) | EP4177146A4 (ko) |
| JP (1) | JP7466705B2 (ko) |
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| FR3129456B1 (fr) * | 2021-11-24 | 2024-05-31 | Gaztransport Et Technigaz | Cuve étanche et thermiquement isolante |
| CN117190062B (zh) * | 2023-09-12 | 2025-08-01 | 沪东中华造船(集团)有限公司 | 一种低温液货储罐的泵塔基座 |
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Also Published As
| Publication number | Publication date |
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| US20230288030A1 (en) | 2023-09-14 |
| JP2023529116A (ja) | 2023-07-07 |
| CN115734913A (zh) | 2023-03-03 |
| US12535186B2 (en) | 2026-01-27 |
| KR102327624B1 (ko) | 2021-11-16 |
| EP4177146A4 (en) | 2024-10-16 |
| EP4177146A1 (en) | 2023-05-10 |
| JP7466705B2 (ja) | 2024-04-12 |
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